What is a ball bearing？

The components of rolling bearings are mainly outer ring, inner ring, rolling elements, and cages; they each have different functions, such as: the inner ring mainly supports the shaft, the outer ring mainly supports parts or shafting, and the cage mainly separates the rolling elements. It has the advantages of small frictional resistance, sensitive start, high efficiency, simple lubrication, and easy interchangeability.

Rolling bearings are widely used in various industries, and there are many types. Generally divided according to the load direction: radial bearings and thrust ball bearings; according to the shape of the rolling elements: ball bearings and roller bearings; ball bearings are mainly used for high speed and low load conditions, and roller bearings are mainly used for high load conditions And low speed occasions.

The method steps of general bearing selection: study the working conditions of the bearing, select the type of rolling bearing, calculate the ratio A/R, calculate the equivalent dynamic load, calculate the basic rated dynamic load value of the bearing, select the model according to the sample, and check the life.

The analysis of working conditions can determine the actual performance requirements of the bearing, such as: bearing load, bearing speed, bearing self-aligning performance, bearing installation and disassembly, etc.

Rolling bearings are mechanical parts that support a rotating shaft with high precision and low friction. To obtain stable performance for a long time, it is very important to design a fit that can avoid adverse effects of rotational motion on the bearing mechanism!

According to the actual working conditions, the fit of the shaft diameter generally chooses "transition fit" or "interference fit". For the fit of the socket of the bearing fixing seat, in order to avoid deformation of the outer ring and inner ring due to the insertion of the bearing and to facilitate assembly, "clearance fit" should be selected.